Oriental style of seat (4)
I believe the answer is:
east
'oriental' is the definition.
(thesaurus)
'style of seat' is the wordplay.
'style of' indicates anagramming the letters (I've seen 'styled' mean this).
'seat' anagrammed gives 'EAST'.
(Other definitions for east that I've seen before include "course" , "Oriental lands" , "Bridge player" , "Tom's schoolfellow" , "Direction taken when going from the US towards Ireland" .)